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#include "select_yql_aggregation.h"
#include "context.h"
#include "select_yql_window.h"
namespace NSQLTranslationV1 {
class TYqlAggregation final: public IYqlWindowLikeNode, private TYqlAggregationArgs {
public:
TYqlAggregation(TPosition position, TYqlAggregationArgs&& args)
: IYqlWindowLikeNode(std::move(position))
, TYqlAggregationArgs(std::move(args))
, Aggregation_(BuildAggregationByType(
Type,
GetPos(),
/*realFunctionName=*/FunctionName,
/*factoryName=*/FactoryName,
Mode))
{
}
bool DoInit(TContext& ctx, ISource* src) override {
TAstListNodeImpl dummy(GetPos()); // For a legacy interopability
if (!NSQLTranslationV1::Init(ctx, src, Args) ||
!Aggregation_->InitAggr(ctx, /*isFactory=*/false, src, dummy, Args)) {
return false;
}
Apply_ = Y();
if (IsWindow()) {
Apply_ = L(std::move(Apply_), "YqlAggWin");
} else {
Apply_ = L(std::move(Apply_), "YqlAgg");
}
Apply_ = L(std::move(Apply_), Factory());
if (IsWindow()) {
Apply_ = L(std::move(Apply_), Q(GetWindowName()));
}
Apply_ = L(std::move(Apply_), Options());
Apply_ = L(std::move(Apply_), TypeStub());
Apply_ = L(std::move(Apply_), ExtractorBody(ctx));
return true;
}
TAstNode* Translate(TContext& ctx) const override {
return Apply_->Translate(ctx);
}
TNodePtr DoClone() const override {
return new TYqlAggregation(*this);
}
private:
TNodePtr Factory() const {
TNodePtr factory = Y();
if (IsWindow()) {
factory = L(std::move(factory), "YqlWinFactory");
} else {
factory = L(std::move(factory), "YqlAggFactory");
}
factory = L(std::move(factory), Name());
for (TNodePtr arg : Args | std::views::drop(1)) {
factory = L(std::move(factory), std::move(arg));
}
return factory;
}
TNodePtr Name() const {
TStringBuf name = FactoryName;
YQL_ENSURE(name.ChopSuffix("_traits_factory"), "'" << name << "'");
return Q(TString(name));
}
TNodePtr Options() const {
TNodePtr options = Y();
if (IsDistinct()) {
options = L(std::move(options), Q(Y(Q("distinct"))));
}
return Q(std::move(options));
}
TNodePtr TypeStub() const {
return Y("Void");
}
TNodePtr ExtractorBody(TContext& ctx) const {
return Aggregation_->GetExtractorBody(/*many=*/false, ctx);
}
bool IsDistinct() const {
return Mode == EAggregateMode::Distinct ||
Mode == EAggregateMode::OverWindowDistinct;
}
bool IsWindow() const {
return Mode == EAggregateMode::OverWindow ||
Mode == EAggregateMode::OverWindowDistinct;
}
const TAggregationPtr Aggregation_;
TNodePtr Apply_;
};
bool IsSupported(EAggregationType type) {
return type == NORMAL ||
type == COUNT;
}
bool IsSupported(const TVector<TNodePtr>& args) {
return args.size() == 1;
}
bool IsSupported(TYqlAggregationArgs& args) {
return IsSupported(args.Type) &&
IsSupported(args.Args);
}
TNodeResult BuildYqlAggregation(TPosition position, TYqlAggregationArgs&& args) {
if (!IsSupported(args)) {
return std::unexpected(ESQLError::UnsupportedYqlSelect);
}
return TNonNull(TNodePtr(new TYqlAggregation(std::move(position), std::move(args))));
}
TNodePtr BuildYqlGrouping(TPosition position, TVector<TNodePtr> args) {
return new TCallNodeImpl(position, "YqlGrouping", std::move(args));
}
} // namespace NSQLTranslationV1
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